[PATCH] testsuite, powerpc: Fix vsx-vectorize-* after alignment peeling [PR118567]

[Alex Coplan]

Hi,

After the recent alignment peeling enhancements in the vectorizer we
started vectorizing the "checking" loops (that check for the right
result) in gcc.target/powerpc/vsx-vectorize-*.c,  thus skewing the
expected counts of various scan-dump-times tests (causing them to FAIL).
This adds #pragma GCC novector above the relevant loops to prevent them
from being vectorized, thereby fixing the test failures.

Tested with RUNTESTFLAGS="powerpc.exp=vsx-vectorize-*.c" on
powerpc64le-linux-gnu (cfarm29): no FAILs observed wtih the patch
applied.  OK for trunk?

Thanks,
Alex

gcc/testsuite/ChangeLog:

        PR testsuite/118567
        * gcc.target/powerpc/vsx-vectorize-1.c: Add #pragma to block
        vectorization of result-checking loop.
        * gcc.target/powerpc/vsx-vectorize-2.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-3.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-4.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-5.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-6.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-7.c: Likewise.
        * gcc.target/powerpc/vsx-vectorize-8.c: Likewise.

diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-1.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-1.c
index a0e0496d345..927a523568b 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-1.c
@@ -30,6 +30,7 @@ main1 (struct foo * __restrict__ p)
     }
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (p->y[i] != x[i])
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-2.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-2.c
index 52c49b27cb7..84a63b3c42f 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-2.c
@@ -15,6 +15,7 @@ void bar (float *pd, float *pa, float *pb, float *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-3.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-3.c
index f2f838a77fc..33054feef57 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-3.c
@@ -15,6 +15,7 @@ void bar (short *pa, short *pb, short *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-4.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-4.c
index 8bf9dff1712..05262cf76d9 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-4.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-4.c
@@ -15,6 +15,7 @@ void bar (double *pa, double *pb, double *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-5.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-5.c
index 1446e40b1d3..5478390f2ec 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-5.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-5.c
@@ -15,6 +15,7 @@ void bar (char *pa, char *pb, char *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] + pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-6.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-6.c
index 6f49ccbbb6a..e1dc35bfd4d 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-6.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-6.c
@@ -15,6 +15,7 @@ void bar (double *pd, double *pa, double *pb, double *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-7.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-7.c
index fde65a521d9..9a1ffd33881 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-7.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-7.c
@@ -15,6 +15,7 @@ void bar (int *pd, int *pa, int *pb, int *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))
diff --git a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-8.c 
b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-8.c
index fb50cd54fd9..2f6fbfb443d 100644
--- a/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-8.c
+++ b/gcc/testsuite/gcc.target/powerpc/vsx-vectorize-8.c
@@ -15,6 +15,7 @@ void bar (short *pd, short *pa, short *pb, short *pc)
   int i;
 
   /* check results:  */
+#pragma GCC novector
   for (i = 0; i < N; i++)
     {
       if (pa[i] != (pb[i] * pc[i]))